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I 2 Sh -Sh t A' CARY. eets ee 1l Steam Heater. No. 65,345. Patented June 4, 1867.

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Steam Heater.

No. 65,345. Patented June 4. 1867.

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@einen tutesv @stmt @fitta Letters Patent No. 65,345, dated June fl, 186i'.

STEAM AND WATER-HEATING APPARATUS.

@te Subtitle nfrtnt ltu in lgtse tcttu's lntcnt :uit mating peut nf tigt sume.

TO ALL W-HOM IT MAY CONCERN:

Be it known-that I, ALANSON CARY, of the city, county, and State of New York, have invented a new and improved Steam and Water-Heating Apparatus; and l do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to thc accompanying drawings, forming part ot' thisl spcciiication.

The object of this invention is te provide a safe, eflicicnt, and economical apparatus for the warming of private dwelling-houses and public buildings of every description by heated air `and the invention consists in placing in a suitable apartment a succession ot' hollow plates, so constructed as to be steam and water-tight, which plates are connected together, and also connected with a steam boiler by suitable pipes; and also in an arrangement of tubes through the said plates, whereby I greatly increase the heating or radiating surface, as will be more fully described.

Figure 1, sheet 1, represents a plan or top vieu1 of my apparatus, enclosed in a chamber provided for the purpose, showing the connecting steam pipues and air tubes.

Figure 2, same Sheet, represents a longitudinal section of iigfl through the line :L1 a', showing the interior ot' the hollow steam plates and air tubes, and also the connecting steam pipes.

Figure 3, sheet 2, represents front or end view through the line y ,1/ of iig. l, the wall of the chamber being removed. l

Figure 4. is a cross-section of tig. 1 through the line z z.

Figure 5 is a view of a detached hollow steam plate, with a portion broken away to show the interior.

Figure 6 is a cross-section ot' the same through the line 1 1i. l Figure 7 is an end view of the same. i

Similar letters of reference indicatie like parts.

The design ot this arrangement of hollow steam plates and air. tubes is to heat a current of air, which is allowed to pass into theV chamber, and in contact with and through the plates, bythe air tubes, and be discharged from the chamber and distributed through the building, may be desired, in a heated state.

A represents the hollow steam plate, a series of which is seen in iig. 1, connected together by the steam pipes marked B. C represents the air tubes, which pass through the steam plates, as seen in the drawing. D represents the walls of the chamber in which the steam plates are placed. E, fig. 2, is an aperture through the bottom of the chamber, for the admission of cold air. F, g. 2, represents apertures for the discharge of the heated air. The steam from the boiler enters at one end of' one of the steam plates, and passes out at the' other end, and into the next plate in the series, and from that to the next, as indicated by the arrows in tig. l. Two or more series of these plates may bc'placed in a chamber, as seen in lig. 2. But as there is no steam connection between them, a single series, or any number contained in the chamber, may be used. Any one o1' more of the series of plates may be disconnected from the boiler at any time by simply turning a steam-cock. By this arrangement I am enabled to adjust the apparatus to suit the diTcrent seasons of the year, or the temperature required in the building. The hot-air tubes C are simply short tubes, which pass directly through the plates, as seen in fig. 2. As the cold air enters at E, the lower portion of the chamber becomes filled, which, by its upward tendency, strikes the lower side of the first series cf plates. Currents of air are at the same time passing upward through each of the air tubes. These currents strike or impinge against the bottom side of the next series of plates, becoming thereby expanded, and pass up through the tubes in that series into the upper portion of the chamberJ from whence the air is distributed to the different parts of thc building. It will be noticed that where the plates join to form the series there is a passage for the air, as will be distinctly sccn in tig. 4. Each series oi' plates rests on suitable supporting-bars, which are marked J in the drawing, so that the joint between the plates may be left sufliciently loose for the passage of a current of air. This peculiar formation of the edges of the plates, as seen in the cross-sections, figs. G and 7, furnishes, in combination with cach other, and talien altogether, a large additional heating surface. .It is well known that air is a Very bad conductor of heat, and that to become heated suiriciently for warming purposes, each particle must be brought in conta-ct with a heated metallic or other surface. Consequently it is of great importance that any apparatus for heating air by steam or water should present the largest and most extended heating surface in the smallest space, Otherwise the expense of an apparatus for heatingr buildings by this method would be greatly enhuneed. By passing the nir tubes C through the hollow steam plates, the heating surface is not only greatly increased, but the course the air is obliged to travel in its passage from the` hot-tom to the top of the chamber adds materially te the amount of calorie which it absorbs. The ends of the tubes are conductors of heut from the steam in the plates, besides which the air is brought directly in Contact with the sides of the heated plates, from which, being greatly expanded, it receils and is `forced to pass through tho tubes. But another and very important advantage is gained by passing the tubos through the platos according to my plan. It is not uncomnloh t0 use' steam of twenty or forty pounds pressure to thesquare inch in an apparatus of this kind, and where hollow steam plates are used, it requires particular care to strengthen them sulieiently Lo render them safe under that pressure. In my apparatus the air tubes serve te bind the plates together past all danger from that source. It will be noticed that the plates (or series of plates) are inclined suiieiently to allow the water of condensation to puss oilL1 and out 0i' the chamber, land hack into the boiler.

Having thus described my invention7 what I claim as new, and desire to secure by Letters Patent, is The combination und arrangement, within the ease I), of one or more series of inclined steam eases A, united together at their edges by menus of' the :regular plates, und connected by the steam pipes B, each plu-te provided with air tubes C passing through there, the tubes in the lower series not being in the seme vertical piane with the tubes in the upper series of eases, substantially as described for the purpose specified.

ALANSON CARY.

Witnesses WM. F. HeNAMAnA, ALEX. F. Roni-mrs. 

